1976 Johnson 35 hp wont start

jtscott90 · Aug 19, 2012

I have a 76 johnson 35 hp that will not start. I have replaced one coil, both condensors and points, both spark plugs, put in a new head gasket that was blown. I cannot get it to start at all. I have great spark at both plugs, and i have to gap set at .030 and the points set at .20. Any suggestions? please

boobie · Aug 19, 2012

Re: 1976 Johnson 35 hp wont start

Squirt some premix fuel in the throat of the carb and see what happens.

jtscott90 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Alright that worked, and now it will not idle hardly at all. and ive looked over all the fuel lines, etc.

fireman57 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Since you have already proven that it is not getting fuel why don't you take the carb off and give it a good cleaning. Make sure you run a small wire through the orafices and jets and spray them out good with carb cleaner and compressed air. I am betting that the problem will be solved.

jtscott90 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

I hace taken it apart and cleaned it very thouroghly once. and i have replaced to gas tank.

jtscott90 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

jtscott90 said:
I hace taken it apart and cleaned it very thouroghly once. and i have replaced to gas tank.

Correction, I rebuilt the carb already.

lindy46 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Did you remove the welch plug on top of the carb and clean out the idle circuit beneath it?

rockfinder2 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Did the round gasket in the center of the float bowl get replaced?

boobie · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Sounds like you have to go through the carb again and make sure the choke is working properly.

jtscott90 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Everything in the carb got cleaned/replaced. Its has a electric choke and i have it set where it works properly.

fireman57 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Have you done a compression test since you changed the head gasket?

jtscott90 · Aug 20, 2012

Re: 1976 Johnson 35 hp wont start

Yes, the top cylinder was 125 bottom cylinder was 120. Checked right after replacement.

fireman57 · Aug 21, 2012

Re: 1976 Johnson 35 hp wont start

You say that you have an electric choke. Is it the canister type with the spring that activates the plunger? If it is your manual choke can still be on as the linkage can get pushed down when reassembling the air silencer. If it has been converted to the black primer solenoid make sure the red lever is pointing the right way.

1976 Johnson 35 hp wont start

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